@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040950,
 author = {Omori, F.},
 issue = {2},
 journal = {Bulletin of the Imperial Earthquake Investigation Committee},
 month = {Oct},
 note = {application/pdf},
 pages = {144--147},
 title = {Note on the Relation to the Epicentral Distance of the Duration of the Preliminary Tremor of the Earthquake Motion of near origin},
 volume = {2},
 year = {1908}
}